Class: Aws::RiKanjoo

Inherits:
Object
  • Object
show all
Defined in:
lib/aws/rikanjo.rb,
lib/aws/rikanjo/mode/ec2.rb,
lib/aws/rikanjo/mode/rds.rb

Defined Under Namespace

Classes: Mode

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(mode = 'ec2', region, instance_type, ri_util, multiaz) ⇒ RiKanjoo

Returns a new instance of RiKanjoo.



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# File 'lib/aws/rikanjo.rb', line 14

def initialize(mode='ec2', region, instance_type, ri_util, multiaz)
  if mode == 'ec2'
    @mode_class = Aws::RiKanjoo::Mode::Ec2.new(region, instance_type, ri_util)
  elsif mode == 'rds'
    @mode_class = Aws::RiKanjoo::Mode::Rds.new(region, instance_type, ri_util, multiaz)
  end
  @region        = region
  @instance_type = instance_type
  @ri_util       = ri_util
  @om_info       = Hash.new
  @ri_info       = Hash.new
end

Instance Attribute Details

#instance_type ⇒ Object (readonly)

Returns the value of attribute instance_type.



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# File 'lib/aws/rikanjo.rb', line 12

def instance_type
  @instance_type
end

#region ⇒ Object (readonly)

Returns the value of attribute region.



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# File 'lib/aws/rikanjo.rb', line 12

def region
  @region
end

#ri_util ⇒ Object (readonly)

Returns the value of attribute ri_util.



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# File 'lib/aws/rikanjo.rb', line 12

def ri_util
  @ri_util
end

Instance Method Details

#calc_year_cost ⇒ Object 



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# File 'lib/aws/rikanjo.rb', line 44

def calc_year_cost

  om_hr_price = @om_info[:hr_price].to_f
  ri_hr_price = @ri_info[@ri_util][:hr_price].to_f
  upfront    = @ri_info[@ri_util][:upfront].to_f

  om_day_paid = (om_hr_price * 24).to_f
  ri_day_paid = (ri_hr_price * 24).to_f

  sum_om_price = om_day_paid
  sum_ri_price = ri_day_paid + upfront
  365.times.each do |d|
    d = d + 1
    sum_om_price = sum_om_price + om_day_paid
    sum_ri_price = sum_ri_price + ri_day_paid

    if sum_ri_price < sum_om_price
      @ri_info[@ri_util].store(:sweet_spot_price, sum_ri_price.round(2))
      @ri_info[@ri_util].store(:sweet_spot_start_day, d)
      break 
    end
  end
  total_om_price = (om_day_paid * 365).round(2)
  @om_info.store(:yr_price, total_om_price)
  total_ri_price = ((ri_day_paid * 365) + upfront).round(2)
  @ri_info[@ri_util].store(:yr_price, total_ri_price)

  # exp. @om_info = {:hr_price=>"0.350", :yr_price=>3066.0}
  # exp. @ri_info = {"ri_util"=>{:upfront=>"NNN", :hr_price=>"NNN",
  #                  :sweet_spot_price=>NNN, :sweet_spot_start_day=>78, :yr_price=>2074.56}}
  return @om_info, @ri_info
end

#om_get_hr_price ⇒ Object 



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# File 'lib/aws/rikanjo.rb', line 27

def om_get_hr_price
   # TODO: merge om and ri
  uri = URI.parse("#{@mode_class.price_url}/#{@mode_class.om_price_file}")
  contents = Net::HTTP.get(uri)

  # parse om info
  @om_info = @mode_class.om_price_from_contents(contents)
end

#ri_get_hr_price_and_upfront ⇒ Object 



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# File 'lib/aws/rikanjo.rb', line 36

def ri_get_hr_price_and_upfront
  uri = URI.parse("#{@mode_class.price_url}/#{@mode_class.ri_price_file}")
  contents = Net::HTTP.get(uri)

  # parse ri info
  @ri_info = @mode_class.ri_price_from_contents(contents)
end

#total_cost_year ⇒ Object 



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# File 'lib/aws/rikanjo.rb', line 77

def total_cost_year
   om_get_hr_price
   ri_get_hr_price_and_upfront
   calc_year_cost 

   discount_per = (100 - ((@ri_info[@ri_util][:yr_price] / @om_info[:yr_price]) * 100)).round(2)

   # If the Reserved Instance does not become cheaper than the On-demand Instance.
   if @ri_info[@ri_util][:sweet_spot_start_day].nil?
     puts "\"Price of the Reserved Instance is higher than the price of On-Demand Instances.\""
     puts "\"region\" : #{@region}"
     puts "\"instance_type\" : #{@instance_type}"
     puts "\"ri_util\" : #{@ri_util}"
     puts "\"discont percent (percent)\" : #{discount_per}"
     puts "\"ondemand hour price (doller)\" : #{@om_info[:hr_price]}"
     puts "\"reserved hour price (doller)\" : #{@ri_info[@ri_util][:hr_price]}"
     puts "\"ondemand year price (doller)\" : #{@om_info[:yr_price]}"
     puts "\"reserved year price (doller)\" : #{@ri_info[@ri_util][:yr_price]}"
     puts "\"reserved upfront (doller)\" : #{@ri_info[@ri_util][:upfront]}"

     exit 1
   end

   sweet_spot_date = Date.today + @ri_info[@ri_util][:sweet_spot_start_day]

   puts "\"region\" : #{@region}"
   puts "\"instance_type\" : #{@instance_type}"
   puts "\"ri_util\" : #{@ri_util}"
   puts "\"discont percent (percent)\" : #{discount_per}"
   puts "\"ondemand hour price (doller)\" : #{@om_info[:hr_price]}"
   puts "\"reserved hour price (doller)\" : #{@ri_info[@ri_util][:hr_price]}"
   puts "\"ondemand year price (doller)\" : #{@om_info[:yr_price]}"
   puts "\"reserved year price (doller)\" : #{@ri_info[@ri_util][:yr_price]}"
   puts "\"reserved upfront (doller)\" : #{@ri_info[@ri_util][:upfront]}"
   puts "\"sweet spot day (day)\" : #{@ri_info[@ri_util][:sweet_spot_start_day]}"
   puts "\"sweet spot date (date)\" : #{sweet_spot_date}"
   puts "\"sweet spot price (doller)\" : #{@ri_info[@ri_util][:sweet_spot_price]}"
end